Combination reforming process

Abstract

Abstract A CONVENTIONAL NAPHTHENE DEHYDROGENATION CATALYST, SUCH AS A PLATINUM-HALOGEN-ALUMINA CATALYST, IS USED IN THE INITIAL ZONE OR REACTORS IN A CATALYTIC REFORMING PROCESS; THE TAIL ZONE OR REACTORS CONTAINS A SUPPORTED GROUP VIII POLYMETALLIC CATALYST WITH PLATINUM AS ONE OF THE METALLIC COMPONENTS. IN A PREFERRED EMBODIMENT, THE TAIL ZONE CONTAINS A PLATINUM-IRIDIUM CATALYST ONE A POROUS SUPPORT SUCH AS ALUMINA. IN THE TAIL REACTORS, CONVERSION OF PARAFFINS IS OF PRIMARY IMPORTANCE, ALONG WITH DEALKYLATION OF ALKYLBENEZENES; IN THE INITIAL REACTORS, THE PREDOMINANT REACTION IS THE CONVERSION OF NAPHTTHENES TO AROMATICS. THE COMBINATION PROCESS RESULTS IN THE FORMATION OF A SIGNIFICANTLY GREATER OCTANE NUMBER PRODUCT THAN IS OBTAINED IN A CONVENTIONAL REOFMING PROCESS IN WHICH PLATINUM-ALUMINA CATALYST IS USED THROUGHOUT.

Inventors

• 👤 J Sinfelt

Bibliographic Details